If you’ve been pulled over in Tennessee on suspicion of driving under the influence (DUI), there’s a good chance the officer will ask you to perform a field sobriety test. These roadside exercises are designed to give law enforcement clues about whether you’re impaired. But how accurate are these tests? And can you refuse them without automatically getting into more legal trouble?
At Brandon Hall Law, we believe knowledge is one of the strongest tools for protecting your rights. Let’s break down what field sobriety tests really are, their reliability, and what Tennessee law says about refusing them.
What Are Field Sobriety Tests?
Field sobriety tests (FSTs) are physical and cognitive exercises administered during a DUI stop. The most common tests include:
- Horizontal Gaze Nystagmus (HGN): Following a moving object with your eyes so the officer can look for involuntary jerking.
- Walk-and-Turn: Walking heel-to-toe in a straight line, turning, and repeating while following directions.
- One-Leg Stand: Standing on one foot for about 30 seconds while counting aloud.
These tests are meant to measure balance, coordination, and the ability to follow instructions—all of which alcohol or drugs may affect.
How Accurate Are Field Sobriety Tests?
While police officers and prosecutors often claim that field sobriety tests are reliable indicators of impairment, the reality is more complicated.
- Not 100% Accurate: Studies suggest that even when administered correctly, field sobriety tests can only predict impairment with limited accuracy. For example, the one-leg stand test is estimated to be correct only about 65% of the time.
- Subjective: Officers interpret the results. What one officer sees as “failure,” another might see as nervousness or physical limitations.
- Outside Factors: Weather, poor lighting, uneven pavement, medical conditions, or even footwear can influence performance.
In short, field sobriety tests are far from foolproof. They often create the appearance of evidence where none exists.
Can You Refuse Field Sobriety Tests in Tennessee?
Yes—you can refuse field sobriety tests in Tennessee. Unlike chemical tests (such as a breathalyzer or blood test), there is no implied consent law requiring you to perform physical field sobriety tests.
Key points to know:
- No Automatic Penalty: Refusing a field sobriety test does not trigger an automatic license suspension like refusing a chemical test would.
- Officer’s Response: Refusal may make the officer more suspicious, but they cannot force you to perform the tests.
- Possible Arrest Anyway: Even without field sobriety test results, an officer may still arrest you if they believe they have probable cause.
The Role of Field Sobriety Tests in Court
If your case goes to trial, the prosecution may use field sobriety test results as evidence of impairment. However, an experienced DUI defense attorney can challenge:
- The officer’s training and administration of the test.
- Environmental or physical factors that could have affected your performance.
- The scientific reliability of the tests themselves.
Challenging the accuracy and fairness of field sobriety tests can significantly weaken the state’s case against you.
Protecting Your Rights During a DUI Stop
If you’re pulled over in Tennessee on suspicion of DUI, here are some important things to keep in mind:
- Be Polite but Cautious: Arguing with an officer won’t help your case.
- Know Your Rights: You do not have to take field sobriety tests.
- Chemical Tests Are Different: Tennessee’s implied consent law requires drivers to submit to a breath or blood test if lawfully arrested for DUI, or risk a license suspension.
- Call an Attorney Immediately: The sooner you contact a DUI defense lawyer, the better your chances of protecting your license, your record, and your future.
Why Choose Brandon Hall Law for Your DUI Defense
At Brandon Hall Law, we’ve successfully defended countless DUI cases across Tennessee. We know the tactics police use, the weaknesses of field sobriety tests, and the strategies to fight back against unfair charges. Our goal is simple: to protect your freedom, your driving privileges, and your future.
Contact a Tennessee DUI Lawyer Today
Facing DUI charges in Tennessee is serious—but you don’t have to face it alone. If you’ve been arrested after refusing or “failing” a field sobriety test, call Brandon Hall Law today for a free consultation. We’ll review your case, explain your options, and build a strong defense strategy to protect your rights.
Call us now to start your defense.
